Pump



April 1931. A. c. NELSON 1,802,827

PUMP

Filed A ril 19, 19.28 3 Sheets-Sheet 1 7:9;

zfi f Qwuantoz April 28, 1931- A. c. NELSON PUMP Filed April 19, 1928 3 Sheets-Sheet 2 April 28, 193.1- A. c. NELSON PUMP Filed April- 19. 1928 3 Sheets-Sheet 3 grwe'nfoz 77. 61% Z50 Patented Apr. 28, 1931 UNITED STATES ARTHUR C. NELSON, OF ALEXANDRIA, MINNESOTA PUMP Application filed April 19,

This invention relates to pumps and has for an important object thereof the provision of a pump in which the resistance to operation resulting from friction of water. in the dis- 8 charge pipe is reduced to a minimum.

A further and more specific object of the invention is to provide a pump wherein astationary piston is employed and the cylinder and check valves are vertically shifted.

A still further object of the invention is to provide a device of this character which may be readily and cheaply manufactured, which will be durable and efficient in service and a general improvement in the art.

These and other objects I attain by the construction shown in the accompanying drawings, wherein for the purpose of illustration is shown a preferred embodiment of my invention and wherein Figure 1 is a vertical sectional View showing a pump constructed in accordance with my invention installed in a well;

Figure'2 is an enlarged elevation of the P p;

Figure 8 is an enlarged vertical sectional view therethrough;

Figure 1 is an enlarged sectional view through the upper end of the cylinder;

Figure 5 is a view similar to that of Figure 39 1 and at right angles thereto;

Figure 6 is a section on the line 6-6 of Figure 4;

Figure 7 is a section on the line 7 7 of Fig ure 3; a Figure 8 is a vertical sectional view showing a modified method of connecting the cylinder and piston;

Figure 9 is a section on the line 99 of Figure 8.

Referring now more particularly to the drawings, the numeral 10 generally designates a cylinder, the upper end of which has a tubular inlet 11 extending transversely thereof. This inlet has an upwardly extending branch 12 axial to the cylinder and formed at its upper end as a valve seat 13. It is further exteriorly threaded, as at 14, for the reception of the lower end of a cage 15 which retains the check ball 16 in proper relation to the seat. The upper end of this cylinder 1928. Serial No. 271.211.

is threaded for coaction with a coupling 17 which is interiorly threaded for the reception of a check ball seat 18. This check ball seat is adapted, as at 19, for engagement with the lower end of a cage 20 retaining a check ball 21 in proper relation to theseat 18. The lower end of the cylinder wall is thickened, as at 22, to permit connection therewith of the upper ends of guide rods 23. Operating within the cylinder is a-pis'ton24 having a cup leather 25 secured to the upper end thereof, as at 26. The lower end of this piston is connected by a coupling member 27 with a standard 28, the lower end of which is secured to a counterweight or base block 29. The coupling 27 is of such size that it projects beyond the outer face of the cylinder and is apertured, as at 30, for the passage of the guide rods 23.

In use of the device, the upper end of the coupling 17 is connected to a discharge pipe 31. To the upper end of this discharge pipe 31 is secured a means for vertically reciprocating the same together with the cylinder 10 and the associated mechanism.

This means in the present disclosure comprises the lever handle 32 of an ordinary pump standard 33. The upper end of the conduit 31 within the discharge chamber 34 is provided with an outlet 35 and at the lower end of this pump chamber, the dischar e pipe is packed to the chamber, as at 36. s the tubing 31 and cylinder are reciprocated,

the piston and counterweight remains stationary with the result that as the tubing is elevated, water is drawn into the cylinder through the intake 11, unseating the check ball 16. As the pipe and cylinder are lowered, the check ball 16 seats and the check ball 21 unseats, permitting the fluid to remain as a stationary column supported by the piston. Accordingly, when the direction of movement of the pipe 31 is again reversed, the water will be elevated. Discharge of water from the outlet'35 will take place as the pipe 31 is lowered.

In Figures 8 and 9, I have shown a modified means for connecting the piston and cylinder. In this construction, a cylinder 37 is provided adjacent its upper end with a spider 38 having a central guide opening 39. A rod 40 is threaded at its lower end and engaged in the upper end of the piston 41. Mounted upon the threaded lower end of this rod is a nut 42 forming means for maintaining in position the packing 43 of the piston. The upper end of this rod has a head 4% which, by its engagement with the spider, will limit separation of the cylinder and piston. The upper end of the cylinder or that portion thereof carrying the intake .is detachably connected with the remainder of the cylinder, as indicated at a5. It will be seen that in both instances, means are provided limiting separation of the cylinder and piston so that the piston and its counterweight may be lifted from the well with the cylinder.

Since the construction hereinbefore set forth iscapable of a certain range of change and modification without materially departing from the spirit of the invention, I do not limit myself to such specific structure en cept as hereinafter claimed.

I claim 1. In a well pump, a base, a standard secured at its lower end to the base, a piston located above the standard, a coupling connecting the upper end of the standard and the lower end of the piston and provided laterally beyond said parts with apertures, a cylinder slidably engaging the piston and open at its upper end and provided near said end with an intake, a check valve preventing reverse fiow through the intake, a reciprocating discharge line having its lower end connected to and communicating with the upper end of the, cylinder, a check valve in the dis charge line preventing down-flow therethrough, and uide rods passing through the apertures of the coupling and connected at their upper ends to the lower end of the cylinder and provided at their lower ends with heads.

2. In a well pump, a base, a piston having its lower end connected to the base, a cylinder slidably engaging the piston and open at its upper end and provided near said end with an intake, a check valve preventing reverse flow through the intake, a reciprocating discharge line having its lower end connected to and communicating withthe upper end of the cylinder, a check valve in the discharge line preventing down-flow therethrough, and a connection between the piston and cylinder preventin separation thereof and including a guide carried by one of said parts and a rod fixed to the other and operating through the guide, the rod having a head engaging the guide to limit the movement of the cylinder in a direction permitting separation thereof from the piston.

3. In a well pump, a base, a piston having itslower end connected to the base, a cylinder slidably engaging the piston, means carried by the upper end of the pistonandcontacting with the cylinder to establish a liquid-tight connection between the piston and cylinder, a tubular inlet extending transversely through the cylinder near the upper end thereof, the inlet being open at its ends and diametrically smaller than the interior of the cylinder and provided in its upper side with an outlet communicating with the cylinder, a check valve preventing reverse flow through said outlet, means carried by the tubular inlet for maintaining the check valve in operative relation to said outlet, a reciprocating discharge line having its lower end connected to and communicating with the upper end of the cylinder, and a check valve in the discharge line preventing down flow therethrough.

l. In a well pump, a base, a piston having its lower end connected to the base, a cylinder sli-dably engaging the piston and provided with an intake, check valve preventing reverse flow, through the intake, a member secured within. and extending transversely across the cylinder above the piston, a rod slidably passing through said member and secured at its lower end to the piston and provided at its upper end with a head adapted to contact with said member to limit the movement of the cylinder in a direction permitting separation thereof from the piston, a reciprocating discharge line having its lower end connected to and communicating with the upper end ofthe cylinder, and a check valve in the discharge line preventing down How therethrough.

In testimony whereof I hereunto affix my signature.

ARTHUR C. NELSON. 

